Filter for a visual display monitor



FIG. 1 is a perspective view of a filter for a visual display monitor showing our new design, the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a side elevational view thereof. 

The ornamental design for a filter for a visual display monitor, as shown and described. 